<?php
/**
 * @package Jio
 */

namespace Jio\Settings;

defined('ABSPATH') || exit;

class CreditsRuntime {

    /**
     * 积分配置（合并默认值）。
     * @return array
     */
    public static function get_credit_settings(): array {
        $defaults = [
            'enabled'              => true,
            'currency_name'        => '',

            'register_bonus'       => 10,

            'daily_signin'         => [
                'enabled' => true,
                'base'    => 1,
                'streak'  => [
                    3  => 2,
                    7  => 5,
                    30 => 20,
                ],
            ],

            'comment_reward'       => [
                'enabled'     => true,
                'amount'      => 1,
                'daily_cap'   => 5,
                'min_length'  => 10,
                'on_approved' => true,
            ],

            'referral_reward'      => [
                'enabled'         => true,
                'promoter_amount' => 5,
                'referred_amount' => 2,
                'require_verify'  => true,
                'ip_daily_cap'    => 3,
                'level_points'    => 0,
            ],

            'download_default_cost' => 0,
        ];
        $saved = get_option('jio_credit_settings', []);
        if (!is_array($saved)) {
            $saved = [];
        }
        // Superseded top-level keys remain physically stored but are not exposed
        // to runtime consumers or written back by current admin clients.
        $saved = array_intersect_key($saved, $defaults);
        return array_replace_recursive($defaults, $saved);
    }

    /**
     * Normalized runtime settings for daily sign-in rewards.
     *
     * @return array{enabled:bool,base:int,streak:array<int,int>,currency_name:string}
     */
    public static function get_signin_reward_settings(): array {
        $config = self::get_credit_settings();
        $signin = is_array($config['daily_signin'] ?? null) ? $config['daily_signin'] : [];
        $streak = [];

        foreach ((array) ($signin['streak'] ?? []) as $day => $bonus) {
            $day = (int) $day;
            $bonus = (int) $bonus;
            if ($day <= 0 || $bonus < 0) {
                continue;
            }
            $streak[$day] = $bonus;
        }

        ksort($streak, SORT_NUMERIC);

        return [
            'enabled'       => !empty($config['enabled']) && !empty($signin['enabled']),
            'base'          => max(0, (int) ($signin['base'] ?? 0)),
            'streak'        => $streak,
            'currency_name' => self::get_currency_name(),
        ];
    }

    /**
     * Shared ref-code settings.
     *
     * @return array{code_length:int,window_days:int,attribution_model:string}
     */
    public static function get_referral_settings(): array {
        $all = Settings::get_all();
        $attribution = sanitize_key((string) ($all['referral_attribution_model'] ?? 'first_touch'));
        if (!in_array($attribution, ['first_touch', 'last_touch'], true)) {
            $attribution = 'first_touch';
        }
        return [
            'code_length' => max(4, min(12, (int) ($all['referral_code_length'] ?? 12))),
            'window_days' => max(1, min(365, (int) ($all['referral_window_days'] ?? 30))),
            'attribution_model' => $attribution,
        ];
    }

    /**
     * @return array{enabled:bool,promoter_amount:int,referred_amount:int,require_verify:bool,ip_daily_cap:int,level_points:int}
     */
    public static function get_referral_reward_settings(): array {
        $config = self::get_credit_settings();
        $reward = is_array($config['referral_reward'] ?? null) ? $config['referral_reward'] : [];

        return [
            'enabled'         => !empty($config['enabled']) && !empty($reward['enabled']),
            'promoter_amount' => max(0, (int) ($reward['promoter_amount'] ?? 0)),
            'referred_amount' => max(0, (int) ($reward['referred_amount'] ?? 0)),
            'require_verify'  => !empty($reward['require_verify']),
            'ip_daily_cap'    => max(0, (int) ($reward['ip_daily_cap'] ?? 0)),
            'level_points'    => max(0, (int) ($reward['level_points'] ?? 0)),
        ];
    }

    /**
     * @return array{enabled:bool,register_field:string,reject_invalid:bool,open_desc:string,required_desc:string}
     */
    public static function get_referral_registration_settings(): array {
        $all = Settings::get_all();
        $mode = sanitize_key((string) ($all['invit_code_s'] ?? 'close'));
        if (!in_array($mode, ['close', 'open', 'must'], true)) {
            $mode = 'close';
        }
        $open_desc = trim((string) ($all['invit_code_open_desc'] ?? ''));
        if ($open_desc === '') {
            $open_desc = __('如您受到邀请，可填写推广码。部分推广码会有额外积分赠送', 'jio');
        }
        $required_desc = trim((string) ($all['invit_code_must_desc'] ?? ''));
        if ($required_desc === '') {
            $required_desc = __('<div>本站需使用推广码注册</div><div>获取推广码请与客服联系</div>', 'jio');
        }

        return [
            'enabled'        => $mode !== 'close',
            'register_field' => $mode === 'must' ? 'required' : ($mode === 'open' ? 'optional' : 'hidden'),
            'reject_invalid' => $mode !== 'close',
            'open_desc'      => $open_desc,
            'required_desc'  => $required_desc,
        ];
    }

    /**
     * @return array{enabled:bool,register_field:string,open_desc:string,required_desc:string}
     */
    public static function get_invite_code_registration_settings(): array {
        $all = Settings::get_all();
        $mode = sanitize_key((string) ($all['invite_code_s'] ?? 'close'));
        if (!in_array($mode, ['close', 'open', 'must'], true)) {
            $mode = 'close';
        }
        $open_desc = trim((string) ($all['invite_code_open_desc'] ?? ''));
        if ($open_desc === '') {
            $open_desc = __('请输入邀请码，注册成功后奖励将自动发放', 'jio');
        }
        $required_desc = trim((string) ($all['invite_code_must_desc'] ?? ''));
        if ($required_desc === '') {
            $required_desc = __('<div>本站需凭邀请码注册</div><div>获取邀请码请与客服联系</div>', 'jio');
        }

        return [
            'enabled'        => $mode !== 'close',
            'register_field' => $mode === 'must' ? 'required' : ($mode === 'open' ? 'optional' : 'hidden'),
            'open_desc'      => $open_desc,
            'required_desc'  => $required_desc,
        ];
    }

    /**
     * 积分功能是否启用。
     * 仅看积分系统开关；不再与 cms_features.download_credit 联合（该开关表示积分购买模式，非按次扣费）。
     */
    public static function credits_enabled(): bool {
        $config = self::get_credit_settings();
        return !empty($config['enabled']);
    }

    /**
     * 自定义货币名称，为空时回退"积分"。
     */
    public static function get_currency_name(): string {
        $config = self::get_credit_settings();
        $name = trim((string) ($config['currency_name'] ?? ''));
        return $name !== '' ? $name : __('积分', 'jio');
    }

    /**
     * Ref 积分奖励是否启用。
     */
    public static function referral_reward_enabled(): bool {
        return !empty(self::get_referral_reward_settings()['enabled']);
    }

    public static function referral_registration_enabled(): bool {
        return !empty(self::get_referral_registration_settings()['enabled']);
    }

    public static function referral_register_field_mode(): string {
        $registration = self::get_referral_registration_settings();
        if (empty($registration['enabled'])) {
            return 'hidden';
        }
        $mode = (string) ($registration['register_field'] ?? 'hidden');
        return in_array($mode, ['hidden', 'optional', 'required'], true) ? $mode : 'hidden';
    }

    public static function referral_reject_invalid(): bool {
        return !empty(self::get_referral_registration_settings()['reject_invalid']);
    }

    public static function referral_code_length(): int {
        return (int) self::get_referral_settings()['code_length'];
    }

    /**
     * 资源下载默认积分价（当资源未单独设价时回退使用）。
     */
    public static function download_default_cost(): int {
        $config = self::get_credit_settings();
        return max(0, (int) ($config['download_default_cost'] ?? 0));
    }
}